01 -
Ensure all ingredients are at room temperature to promote even mixing and proper texture. Preheat the oven to 175°C. Grease and flour a 23 cm loaf pan, then set aside.
02 -
In a large bowl, beat the softened butter and granulated sugar using an electric mixer on medium speed until the mixture is light, fluffy, and pale in color, approximately 3 to 5 minutes.
03 -
Add the whole eggs and egg yolks gradually, beating after each addition until fully incorporated. Mix in the vanilla extract.
04 -
In a separate bowl, sift together the all-purpose flour, cake flour, baking powder, and salt to ensure even distribution of leavening agents and prevent lumps.
05 -
Add the dry ingredients to the butter mixture in three additions, alternating with the milk and Greek yogurt in two additions, beginning and ending with the dry ingredients. Mix gently after each to avoid overmixing.
06 -
Using a spatula, carefully fold the rainbow sprinkles into the batter to distribute evenly without color bleeding.
07 -
Pour the batter into the prepared loaf pan, smoothing the top with a spatula. Bake in the preheated oven at 175°C for 60 minutes or until a toothpick inserted into the center comes out clean.
08 -
Allow the pound cake to cool in the pan for 15 minutes, then transfer it to a wire rack to cool completely before applying the glaze to prevent melting.
09 -
Whisk together confectioner’s sugar, remaining Greek yogurt, and heavy cream or milk until smooth. Drizzle evenly over the cooled cake and let set before serving.